[Checkins] SVN: BTrees/branches/py3k/ Coverage for normal cases.

[Tres Seaver]

Log message for revision 128613:
  Coverage for normal cases.

Changed:
  _U  BTrees/branches/py3k/
  U   BTrees/branches/py3k/BTrees/tests/test_Length.py

-=-
Modified: BTrees/branches/py3k/BTrees/tests/test_Length.py
===================================================================
--- BTrees/branches/py3k/BTrees/tests/test_Length.py	2012-12-12 14:40:57 UTC (rev 128612)
+++ BTrees/branches/py3k/BTrees/tests/test_Length.py	2012-12-12 14:40:58 UTC (rev 128613)
@@ -53,6 +53,16 @@
         length = self._makeOne()
         self.assertEqual(length._p_resolveConflict(5, 7, 9), 11)
 
+    def test_change_w_positive_delta(self):
+        length = self._makeOne()
+        length.change(3)
+        self.assertEqual(length.value, 3)
+
+    def test_change_w_negative_delta(self):
+        length = self._makeOne()
+        length.change(-3)
+        self.assertEqual(length.value, -3)
+
     def test_change_overflows_to_long(self):
         import sys
         try: